Formation of N-bridgehead 1,2,5-thiadiazolium and selenadiazolium rings through an intramolecular cyclisation reaction.
Treatment of N-lithiopyridylketimide derivatives Li[R(C=N)py] (R=Ph, py) with ECl(2) (E=S, Se) affords the fused thiadiazolium and selenadiazolium salts [RC(6)H(4)N(2)E]Cl [1]Cl and [2]Cl containing a bridgehead N atom through intramolecular coordination.
Bacon
Catherine E
CE
Department of Chemistry, The University of Cambridge, Lensfield Road, Cambridge, UK CB2 1EW.
Eisler
Dana J
DJ
Melen
Rebecca L
RL
Rawson
Jeremy M
JM
D003500:Cyclization; D009584:Nitrogen / Q000737:chemistry*; D012643:Selenium / Q000737:chemistry*; D013830:Thiadiazoles / Q000138:chemical synthesis* / Q000737:chemistry
D013830:Thiadiazoles; D012643:Selenium; D009584:Nitrogen